How many protons does silicon have?

28
2
14
28.08

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

What happens to isotopes that are unstable?

Nonpoint source pollution is difficult to control because it